Chapter 9 Wireless LAN

9.2.5 One-Touch Intelligent Security Technology (OTIST)

With ZyXEL’s OTIST, you set up the SSID and the encryption (WEP or WPA-PSK) on the ZyXEL Device. Then, the ZyXEL Device transfers them to the devices in the wireless networks. As a result, you do not have to set up the SSID and encryption on every device in the wireless network.

The devices in the wireless network have to support OTIST, and they have to be in range of the ZyXEL Device when you activate it. See Section 9.6 on page 128 for more details.

9.3 Wireless Performance Overview

The following sections introduce different ways to improve the performance of the wireless network.

9.3.1 Quality of Service (QoS)

You can turn on Wi-Fi MultiMedia (WMM) QoS to improve the performance of voice and video applications in the wireless network. QoS gives high priority to voice and video, which makes them run more smoothly. Similarly, it gives low priority to many large file downloads so that they do not reduce the quality of other applications.

9.4 Additional Wireless Terms

The following table describes wireless network terms and acronyms used in the ZyXEL Device’s Web Configurator.

Table 32 Additional Wireless Terms

TERM

DESCRIPTION

Intra-BSS Traffic

This describes direct communication (not through the ZyXEL Device) between

 

two wireless devices within a wireless network. You might disable this kind of

 

communication to enhance security within your wireless network.

 

 

RTS/CTS Threshold

In a wireless network which covers a large area, wireless devices are

 

sometimes not aware of each other’s presence. This may cause them to send

 

information to the AP at the same time and result in information colliding and

 

not getting through.

 

By setting this value lower than the default value, the wireless devices must

 

sometimes get permission to send information to the ZyXEL Device. The

 

lower the value, the more often the devices must get permission.

 

If this value is greater than the fragmentation threshold value (see below),

 

then wireless devices never have to get permission to send information to the

 

ZyXEL Device.

 

 

Preamble

A preamble affects the timing in your wireless network. There are two

 

preamble modes: long and short. If a device uses a different preamble mode

 

than the ZyXEL Device does, it cannot communicate with the ZyXEL Device.

 

 

Authentication

The process of verifying whether a wireless device is allowed to use the

 

wireless network.

 

 

Max. Frame Burst

Enable this to improve the performance of both pure IEEE 802.11g and mixed

 

IEEE 802.11b/g networks. Maximum Frame Burst sets the maximum time that

 

the ZyXEL Device transmits IEEE 802.11g wireless traffic only.

 

 

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P-2602H(W)(L)-DxA User’s Guide